CALCULATE THE NUMBERS OF MOLES IN 200g OF
(1) CaO
(2) MgCO3
(3) HCOOH
Answers
Answer:
How do I calculate the number of moles in 200 grams of CaCo3?
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5 Answers

Anonymous
Answered April 22, 2018
I'm assuming you are asking about Calcium Carbonate. Be careful when writing chemical equations, the formula for Calcium Carbonate is CaCO3 not CaCo3.
So first you have to calculate the molar mass of CaCO3. We have one atom each of Calcium and Carbon and three atoms of Oxygen in one molecule of CaCO3. So the molecular mass will be
40u +12u +(16*3)u
=100u
Now the molar mass will be the molecular mass in grams. So the molar mass of CaCO3 is 100grams. This means 1 mole of CaCO3 is equal to 100g.
=> 1g of CaCO3 = 1/100 mole
=> 1*200 g = (1/100) * 200 moles
=> 200g of CaCO3 = 2 moles
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